I think we may be shooting our Linux community in the foot by talking about learning or how easy it is to learn Linux. Note that MS doesn't talk about learning 8 if you've been using 7. You transition from one to the next. Learning sounds like hard work. Transitioning (or something similar) to Linux is much easier than learning Linux.
My point exactly. Transitioning is learning. Its about semantics and perception. Transitioning is easy and natural. Learning is drudgery.